Calibration of double electroinduction spherical electric field strength sensor in a homogeneous field
For measuring the strength of electric fields near highvoltage equipment, dual electroinduction spherical sensors, which are a constructive combination of two double sensors into one, are promising. Before operation of the sensors, they must be calibrated in a homogeneous ED. This process is tim...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2022-04-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2022/%E2%84%96%202%20(182)%20(%D0%9E%D0%9D%D0%92)/102-109%20%D0%91%D0%B8%D1%80%D1%8E%D0%BA%D0%BE%D0%B2%20%D0%A1.%20%D0%92.,%20%D0%A2%D1%8E%D0%BA%D0%B8%D0%BD%D0%B0%20%D0%9B.%20%D0%92,%20%D0%A2%D1%8E%D0%BA%D0%B8%D0%BD%20%D0%90.%20%D0%92..pdf |
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| Summary: | For measuring the strength of electric fields near highvoltage equipment, dual electroinduction spherical
sensors, which are a constructive combination of
two double sensors into one, are promising. Before
operation of the sensors, they must be calibrated in
a homogeneous ED. This process is time consuming,
expensive and not safe. In the paper, the authors
propose the idea of calibrating sensors with currents
equivalent to the output currents of a sensor located in
a real uniform field. For this, a current signal simulator
has been developed, which is based on mathematical
relationships obtained during the theoretical
interaction of a sensor with a homogeneous ED. To
test the proposed idea, the dual sensor is first tuned
and calibrated according to the method described in
the article to obtain static characteristics. Then, to
confirm the correctness of the calibration, the sensor
is placed in a real homogeneous electric field. In a
homogeneous EC, static characteristics are taken from
the sensor and compared with its static characteristics
obtained after the current signal simulator. The results
of the comparison showed a good match of the static
characteristics. The discrepancy is no more than ±3 %.
Since the experiments are carried out for evaluation,
such an agreement of the static characteristics can
be considered acceptable. A more careful adjustment
of the measuring circuits of the dual sensor will
reduce the error of the discrepancy between the static characteristics to (0,5–1) %. The obtained results of
the research allow us to confirm the adequacy of the
theory underlying the calculations of dual electric
induction sensors of the electric field strength. |
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| ISSN: | 1813-8225 2541-7541 |